Abstract: In a user equipment UE according to the present invention which appropriately measures downlink radio quality when multi-carrier transmission is performed, the user equipment UE includes a measurement unit 22B configured to perform measurement processes in the first carrier and the second carrier, wherein when simultaneous communication of a downlink signal in the first carrier and a downlink signal in the second carrier is performed, the measurement unit 22B is configured to perform only the measurement process in the second carrier.

Abstract: To reduce deterioration of a downlink signal when a multicarrier transmission is performed. A base station device eNB according to the present invention communication system includes: an uplink signal reception unit 17 configured to receive an uplink signal in a first carrier and an uplink signal in a second carrier, the uplink signal being transmitted from a user equipment UE; and a downlink signal transmission unit 15 configured to transmit a downlink signal in the first carrier and a downlink signal in the second carrier to the user equipment UE, wherein the downlink signal transmission unit 15 is configured to decide whether to transmit the downlink signal in the first carrier based on whether the uplink signal reception unit 17 receives the uplink signal in the second carrier.

Abstract: A terminal apparatus that performs radio communication with a base station apparatus in a mobile communication system, including: a transmission mode information receiving unit configured to receive transmission mode information, from the base station apparatus, corresponding to a transmission mode that should be set in the terminal apparatus; a transmission mode setting unit configured to set the terminal apparatus to the transmission mode if the terminal apparatus can perform radio transmission in the transmission mode corresponding to the transmission mode information received by the transmission mode receiving unit; and a radio transmission unit configured to perform radio transmission in the transmission mode.

Abstract: A radio terminal apparatus is provided. When the radio terminal apparatus simultaneously transmits a plurality of modulated waves having different frequencies, the radio terminal apparatus can effectively suppress intermodulation distortions without excessively reducing the transmission powers. This radio terminal apparatus, which is an apparatus for simultaneously transmitting a plurality of modulated waves having different frequencies, comprises a transmission control unit (20). The transmission control unit (20) comprises a transmission power adjustment unit (211) that adjusts the transmission power of a modulated wave existing in proximity to an intermodulation distortion included in a predetermined protected band such that the transmission power is smaller than the transmission powers of the other modulated waves.

Abstract: A duplexer D1 or D2 to be used is appropriately selected from multiple duplexers D1 and D2. A mobile communication method of the invention is a mobile communication method for a mobile communication system 1 operated in a band F1. The method includes: a step A of causing a radio base station eNB in the mobile communication system 1 to notify a mobile station UE of information concerning a system X operated in a band 2 adjacent to the band F1 and information concerning a system Y operated in a band 3 adjacent to the band 1; and a step B of causing the mobile station UE to select a duplexer D1 (or D2) to be used from multiple duplexers D1 and D2 on the basis of the information concerning the system X and the information concerning the system Y.

Abstract: One objective of the present invention is to determine an allowed range of transmission power in relaxation of the transmission power of a user equipment.

Abstract: User equipment includes a convertor that converts transmission target frequency domain signal into time domain signal; a quadrature modulator that applies quadrature modulation to the time domain signal; a cancellation signal generator that generates image leakage cancellation signal by converting image signal into time domain signal, and applying the quadrature modulation, wherein the image signal has a frequency component that is symmetrical to the transmission target signal with respect to center of transmission frequency range; an adjuster that monitors the frequency component of the image signal in output signal from the quadrature modulator, and that adjusts amplitude and a phase of image leakage cancellation signal so as to cancel the frequency component; and a combiner that combines output signal from the quadrature modulator with image leakage cancellation signal, and that provides a power amplifier with combined signal.

Abstract: A mobile station includes, where the mobile station supports a first frequency band and a second frequency band, an information element generating unit configured to generate an information element indicating at least one of whether a receiver sensitivity is degraded in the second frequency band, whether a certificate has been obtained for communications in the second frequency band, and whether transmission and reception bands of the mobile station correspond to a portion of a bandwidth of the second frequency band, and a transmitting unit configured to transmit the generated information element.

Abstract: A base station device eNB according to the embodiment is provided with a Capability signal reception unit 202 configured to receive, from a user device UE, a Capability signal that notifies whether there is a capability to simultaneously transmit an uplink signal in an allocated discontinuous frequency band, and the Capability signal is configured to be notified for each operation band.

Abstract: A duplexer D1 or D2 to be used is appropriately selected from multiple duplexers D1 and D2. A mobile communication method of the invention is a mobile communication method for a mobile communication system 1 operated in a band F1. The method includes: a step A of causing a radio base station eNB in the mobile communication system 1 to notify a mobile station UE of information concerning a system X operated in a band 2 adjacent to the band F1 and information concerning a system Y operated in a band 3 adjacent to the band 1; and a step B of causing the mobile station UE to select a duplexer D1 (or D2) to be used from multiple duplexers D1 and D2 on the basis of the information concerning the system X and the information concerning the system Y.

Abstract: The present invention enables, without defining a new band, use of a network signaling value for multi-cluster communication in an existing band where no network signaling value has been defined. A mobile communication method according to the present invention includes: a step A of notifying, by a radio base station eNB, a mobile station UE of a network signaling value through “RRC Reconfiguration,” the mobile station UE being performing single cluster communication using one component carrier in a supported band; and a step B of reducing, by the mobile station UE, transmission power in the single cluster communication on the basis of the network signaling value.

Abstract: In order to appropriately set CA, a mobile communication method according to the present invention includes the steps where: a mobile station UE notifies a radio base station eNB of a “CA band combination” that is supported by the mobile station UE among “CA band combinations”; and the radio base station eNB determines whether or not to set carrier aggregation for the mobile station UE on the basis of whether or not “NS” corresponding to a band used in carrier aggregation is included in the “NS” specified by the received “CA band combination”.

Abstract: A mobile communication method and a mobile station appropriately use equivalent band indicators. The mobile communication method includes: a step of broadcasting, by a radio base station BS, a band indicator indicating a band 19 and an equivalent band indicator indicating bands 5 and B26 overlapping the band 19; and a step of performing, by a mobile station UE, an connection process in a band 5 or B26 when the mobile station is not compatible with the band 19 indicated by the received first band indicator and is compatible with the band 5 or B26 indicated by the received equivalent band indicator.

Abstract: To appropriately decrease the amount of interference with respect to an adjacent band appropriately using “A-MPR” and “NS”. A mobile communication method according to the present invention includes a process A in which a mobile station UE notifies a radio base station eNB of “NS (network signaling value)” to which the mobile station UE corresponds, and a process B in which the radio base station eNB controls connection of the mobile station UE based on the notified “NS”.

Abstract: User equipment includes a diplexer that separates an uplink frequency band from a downlink frequency band of different component carriers (CCs); a duplexer that separates an uplink frequency band from a downlink frequency band of each of CCs; a reference value calculation unit that calculates a lower limit and, at least, a reference value being greater than the lower limit using control information from a base station; and a transmitter that transmits an uplink signal with transmission power calculated from the reference value while using a radio resource specified by the control signal in the uplink frequency bands of one or more of the CCs, wherein, when the control signal specifies the radio resource of two or more of the CCs, the lower limit is less than that in a case where the control signal specifies the radio resource of less than two of the CCs.

Abstract: A base station device eNB according to the embodiment is provided with a Capability signal reception unit 202 configured to receive, from a user device UE, a Capability signal that notifies whether there is a capability to simultaneously transmit an uplink signal in an allocated discontinuous frequency band, and the Capability signal is configured to be notified for each operation band.

Abstract: A mobile station includes, where the mobile station supports a first frequency band and a second frequency band, an information element generating unit configured to generate an information element indicating at least one of whether a receiver sensitivity is degraded in the second frequency band, whether a certificate has been obtained for communications in the second frequency band, and whether transmission and reception bands of the mobile station correspond to a portion of a bandwidth of the second frequency band, and a transmitting unit configured to transmit the generated information element.

Abstract: In order to enable simultaneous communication using a plurality of frequencies, provided is a mobile communication terminal including: a first combining circuit 210 that receives transmission signals of two frequency bands, and outputs a combined signal; a triplexer 220 including: a transmitting filter 221 that filters the signal inputted by the first combining circuit 210 and outputs the resultant signal; and a receiving filter A 222 and a receiving filter B 223 that each filter an inputted given signal and output the resultant signal; a combined signal filter 230 including: a filter P 231 having the same pass characteristic as that of the transmitting filter 221; and a filter Q 232 having the same pass characteristic as that of the receiving filter B 223, the combined signal filter 230 filtering the signal outputted by the first combining circuit 210 and outputting the resultant signal; a phase adjuster 240 that adjusts a phase of the signal outputted by the combined signal filter 230 to a phase opposite to

Abstract: A terminal apparatus that performs radio communication with a base station apparatus in a mobile communication system, including: a transmission mode information receiving unit configured to receive transmission mode information, from the base station apparatus, corresponding to a transmission mode that should be set in the terminal apparatus; a transmission mode setting unit configured to set the terminal apparatus to the transmission mode if the terminal apparatus can perform radio transmission in the transmission mode corresponding to the transmission mode information received by the transmission mode receiving unit; and a radio transmission unit configured to perform radio transmission in the transmission mode.

Abstract: User equipment includes a convertor that converts transmission target frequency domain signal into time domain signal; a quadrature modulator that applies quadrature modulation to the time domain signal; a cancellation signal generator that generates image leakage cancellation signal by converting image signal into time domain signal, and applying the quadrature modulation, wherein the image signal has a frequency component that is symmetrical to the transmission target signal with respect to center of transmission frequency range; an adjuster that monitors the frequency component of the image signal in output signal from the quadrature modulator, and that adjusts amplitude and a phase of image leakage cancellation signal so as to cancel the frequency component; and a combiner that combines output signal from the quadrature modulator with image leakage cancellation signal, and that provides a power amplifier with combined signal.